Very helpful.
Something you may wish to try, as I have seen it used to
Great Effect is to glaze a metallic over the
NMM painted surface when completed.
This gives the surface an even more metallic look, without being really metallic, nor
NMM.
It is an effect I am trying to master (again - nearly 20 years of not painting can cause skills to be forgotten), and the very few bits of my Orc Armor where I have achieved the effect is stunning (so far, only on one spear, one helmet, and one section of armor).
But I would like to be able to use the techniques on my own Elves (Last Alliance Spearmen/elves with archers backing them up).
The tutorial you have is pretty helpful.
MB